International Colloquium on Philosophy, Science, and Theology in the Middle Ages (1st : 1973 : North Andover, Mass.)
Dordrecht, Holland ; Boston : D. Reidel Pub. Co., [1975]
Conference on Machaut's World: Science and Art in the Fourteenth Century (1977 : New York Academy of Sciences)
New York : New York Academy of Sciences, 1978.
Conference on Machaut's World: Science and Art in the Fourteenth Century (1977 : New York Academy of Sciences)
New York : New York Academy of Sciences, 1978.